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Thermal denaturation of peptide-loaded HLA-A2 heterodimers (50 μg/ml) (A) and free β2m (50 μg/ml) (B) monitored by CD. The curve for free β2m was factored by 0.25 to represent its relative contribution to the mean residue ellipticity of the heterodimer. The points shown at 25°C were taken from the full CD spectrum of the renatured protein.
